耐溶剂聚酰亚胺/陶瓷复合膜的制备及性能表征

doi:10.16085/j.issn.1000-6613.2015.11.026

化工进展 ›› 2015, Vol. 34 ›› Issue (11): 3990-3994,4000.DOI: 10.16085/j.issn.1000-6613.2015.11.026

耐溶剂聚酰亚胺/陶瓷复合膜的制备及性能表征

姚正平

常州大学石油化工学院, 江苏常州 213164

收稿日期:2015-01-22 修回日期:2015-03-22 出版日期:2015-11-05 发布日期:2015-11-05
通讯作者: 姚正平(1988—),男,硕士研究生,从事膜分离技术的研究。E-mailfriend_yzp@163.com。
作者简介:姚正平(1988—),男,硕士研究生,从事膜分离技术的研究。E-mailfriend_yzp@163.com。

Preparation and characterization of solvent-resistant polyimide/ceramic composite membrane

YAO Zhengping

School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

Received:2015-01-22 Revised:2015-03-22 Online:2015-11-05 Published:2015-11-05

摘要/Abstract

摘要： 采用3,3',4,4'-二苯酮四羧酸二酐(BTDA)、4,4'-二氨基二苯基甲烷(MDA)和4,4'-二氨基联苯(Bz)按一定比例共聚合成了一类新的共聚型聚酰亚胺(PI-BTDA/MDA/Bz),通过调整MDA和Bz的比例制备了4种具有不同化学结构的聚酰亚胺均质膜,测试了这些聚酰亚胺均质膜对水的接触角和在N,N-二甲基甲酰胺中的溶胀性。实验结果表明:BTDA、MDA、Bz的摩尔比为5:4:1时,所得的聚酰亚胺均质膜亲水性最好,且耐溶剂性能最优。以此比例的聚酰胺酸为铸膜液,0.2mm孔径的Al₂O₃陶瓷膜片为支撑体,制备了聚酰亚胺复合膜,并考察了进料温度和进料浓度对复合膜分离性能的影响。

关键词: 聚合, 膜, 渗透蒸发, 聚酰亚胺/陶瓷复合膜, 废水处理

Abstract: New kind of copolymides(PI-BTDA/MDA/Bz) have been synthesized by the reaction of 3, 3', 4, 4'-benzophenonetetracarboxylic dianhydride(BTDA), 4, 4'-diaminodiphenyl methane(MDA) and 4, 4'-diaminodiphenyl p-diaminodiphenyl(Bz) according to a certain molar ratio. Four kinds of polymide homogeneous membranes with different chemical structures were prepared through adjusting the proportion of MDA and Bz. The contact angles of the polyimide homogeneous membranes were tested with deionized water, while the swelling property was investigated in N, N-dimethylformamide. The results showed that the homogeneous membranes have the best hydrophilicity and optimal solvent-resistant performance while the molar ratio of BTDA/MDA/Bz was 5:4:1. Using this polyamide acid as casting solution, a polyimide composite membrane was prepared on Al₂O₃ ceramic membrane as support, which has a pore size of 0.2μm. And the influence of concentration and temperature of feed on the separation performance were investigated.

Key words: polymerization, membrane, pervaporation, polyimide/ceramic composite membrane, wastewater treatment

中图分类号:

TQ311
TQ323

姚正平. 耐溶剂聚酰亚胺/陶瓷复合膜的制备及性能表征[J]. 化工进展, 2015, 34(11): 3990-3994,4000.

YAO Zhengping. Preparation and characterization of solvent-resistant polyimide/ceramic composite membrane[J]. Chemical Industry and Engineering Progree, 2015, 34(11): 3990-3994,4000.

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耐溶剂聚酰亚胺/陶瓷复合膜的制备及性能表征

Preparation and characterization of solvent-resistant polyimide/ceramic composite membrane

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